Method of making woven belting.



Muy 113,1

2 SHEEYSM-SHEEY H, l.A HATHAWAY.

Minion 0F Mmmm; WUVEN BELUNG. APPLlCAIGN HLED H5126. 1913.

H. I.| HAHAWAY.

METHOD 0F MAKING WOVEN BELTING.

APPLscATxoN msn rsu.2.1913.

1 1 83,1 94;. lzltfnted May 16, 1916.

2 SHEETS-SHEET 2.

HENRY L. HATHAWAY, OE'CINCINNATI, OHIO.

METHOD 0F liIAKING WOVEN BELTING.

Specification of Letters Patent.

Patented May 16, 1916.

Application led February 26, 1913. Serial No. 750.807.

To all ulzom t muy concern.'

Be it known that I, Hrxnv L. Hx'rlLiwar, a citizen of the l'nited States. residing at Cincinnati, in the county of Hamilton and Stateof Ohio, haveinvented certain new and useful Improvementsin Methods of Making loven Belting, of which the.

following is a specification. y

The article known 1n the arts as rubber belting has heretofore, when made under one method in quite gene `al use, consisted of fa textile fabric body, the several plies of 'Whit 1 were provided with a coating of rubobjection that the plies. under operativeA conditions, will separate, and rubber belting made under the latter method is subject to the Objection that the rubber fails to permeate the fabric and fails to properly impregnate the` same, for the reason that the textile fabric acts in the nature of a filter and permits only the more fluid constituents ot' the rubber composition to penetrate the interior f of the belting.' with the result that the interior plies are held together substantially solely by the texture of the fabric.

It is the object of my invention to provide a new and improved method of making rubber belting inwwhich the rubber compost tion homogeneouslyr impregnates the textile fabric: further to provide a new and iniproved method of making woven belting comprisingr strands which comprise yarn and a proofing substance; further to provide a new and improved method of making wjven beltingvhaving strings of proofing substance interlaced therein and pressed; and the invention consists in a new and improved method of l'nalting belting and the steps thereof hcrcin referred to and claimed. The invention will be further readily un derstood from the following description' and claims, and from the. drawings. f l

l have illustrated in v invention as applied in a fivefply woven beltiug as au exemplifieation, but l flesie it to be understood 'piece of the same.

that my invention relates to woven belt-ing of one or more plies. and I claim my invention irrespective of the number of 1.lies. as my invention is applicable to single or multi-ply belting.

I do not herein claim the belting herein shown and described, reserving the claims for the belting for another application to be filed by me division-.il hereof'.

In the drawings: Figure l is a cross-section of a piece of woven fabric` broken away at its ends. the strands of which are provided with strings of proofing substance. Fig. 2 is a longitudinal section of the same taken on a line to expose the \varpstrainls of tlie several plies. Fig. 3 is a similar section taken on a line to expose one of the bimlerstrands. Fig. l is an enlarged crosssection of a strand of the woven fabric. Fig. 7 is'an enlarged side elevation of a Fig. (i is a cross-section off-.1 piece of my improved woven belting. Fig. T is a longitudinal section of the same, taken on a line to expose the warp-strands of the several plies, and provided with an exterior coating of proofing substance. Fig. 8 is a similar section of the same. taken on a` line to expose one of the binder-strands. and provided with an exterior coating oi proofing substance; and Fig. 9 is`a dia granmiatic representation of an exemplified machine Ain which my improved belting is stretched and pressed.

`The fabric is woven, as indicated at 1U. 1 have illustrated the same as comprising weft-strands l1, l1, wa rp-strands l1?, 12. and binder-strands 13. 13, the strands comprising a string 14 of proofing substance` shown as the core of the strand.` about which the yarn, shown at l5, is t'wisted in a suitable spinningr operation.

rl`he proofing substance is a suitable substance impervious or substantially imw pcrvious to moisture. acids. gases, or other deteriorating agencies` towhich the beltiug may be subjected, dependent on the purpose Jfor which or the location in which the belt` ing may be emploveffl. This proofing substance. may be iustanred as rubber. such as india rubber, gutta percha. bal-at: gum, or similar substance` or compounds or compositions containing the same.

rlfhe proofingr substance is preferably first reduced to a plastic or semi-fluid state, by

heat, or by manipulation. lt may be Sub stantially unvulcanized rubber, or composi tion containing the .saine The proofing substance is formed into a string, such as 14. The fibrous yarn may be cotton, flax, hemp, or other suitable. fiber, spun about the string of proofing substance.

The woven fabric 1U, woven with the composite strands of ibcryarn and proofing substance, is preferably subjected to the, action of a dissolving agent, for instance, benzin, to soften the proofing substance and reduce it to a permeablecondition for im pregnating the yarn and bein squeezed into the interstices 1G between tie strands. Reducing the proofing substance to a condition to permit impregnation of the yarn and its reception in the interstices may also be accomplished or aided by heat. The

woven fabric is further subjected to compression, or so-called calendering with com pression rollers, whereby the-proofing substance is caused to impregnate the fibrous material and to fill the interstices between the strands, whereby the fibers of the yarn and the yarns ot' the stretches are bound together homogeneously. The woven fabric may be further subjected to stretching, and this stretching may take place concomitantly with the compression, and preferably be a stretching lengthwise of the belting, so that elongation of the finished belting will be resisted primarily by the fibrous structure or fabric of the belting.

If desired. the woven fabric may also be provided all about the saine with an exterior coating 1T of' proofing substance` concomitantly with the compression heretofore mentioned, or as a subsequent step.

The compressed structure is further cured, which. when an india rubber proofing is employed. may consist in vuloanization, or such other step as the particular proofing substance employed may require. For instance, balata gum ordinarily requires merely a heating and cooling.

My improved woven belting presents a structure in which the proofing substance is pressed outwardly from within the strands comprised in thc woven fabric` the proofing substance beingy interlaced with the strands. and presents a structure in which the proofingl substance bind.D the liber` and yarns together llomogcncouslv throughout the entire structure. The proofing .subY Stance also acts` as a resistant lo abrasive notion from external wear and friction. l impregnatcs the entire striulurc. The woven structure is further bound together b v the frequenti; rcrurriug biollcrstrarole. The result is that my ilnploicd woicu beltY ing is exceptionally strong' and liialilc :uol presents a Structure tborouulilj. iinprcgY nated with proofing substance and bound to gelber by the fibers of. the struction, irrerisaiee spectire of the amount of surface Wear which the belt may have sustained in use, for at all times presenting a strong surface exceptionally resistant, to rupture andA having the proper gripping properties in power transmission. My improved woven belting is also applicable for conveyor belts and other uses to which betting is or may be applied.

l have, in the drawin s, diagrammatically outlined an exempli ying machine in which my improved woven fabric may be treated. A

The fabric is shown` as received from a drum 21 into a tank 22, This tank has a suitable dissolving agent therein, of which benzin maybe instanced as an example, for reducing the proofing substance to a condition of permeability to permit impregna-tion of the fibers and filling` of the interstices by pressure. A bath is thus formed through which the woven fabric passes, the latter being supported for instance by supporting rollers '23. The woven fabric is shown as` passing about directing rollers 24, 25, QG, Q7. 1

Suitable. pressing agencies are employed. 'ilhus a pair of rollers 28,29, act on the woven fabric for preferably slightly squeezing the same. These. rollers are preferably heated.

30, 31, are a pair of rollers between which. the woven fabric is pressed. These rollers are preferably heated. The heatin of the rollers aids in rendering theproo ng substance permeable. The rollers 30, 31, preferably rotate at greater peripheral speed than the peripheral speed of the rollers 28, 251, for stretching the wolven fabric between the two sets of rollers, and acting with pressure upon the woven fabric in its stretched condition. 3Q, 33, are a pairof rollers which also act preferably with pres- `sure upon the treated woven fabric and are preferably heated. The action of the pressure rollers is such as to compress the woven fabric and to cause impregnation of the fibers and varn with the proofing substance, to squeeze the'cores of proofing substance outwardly,y to cause filling o-f the interstices of said strands with said proofing substance, and to provide the exterior surface of the fabric with a coating of the proofingrsub- 4stance. A suitable number of thepressing agencies may be employed. i

lf desired. tbe treated fabric may be provided with an additional or thicker exterior routing 1T of the proofing substance. which' is drown applied at the rollers fit, 35, which forni a trough 3G through which the treated fabric iliasscs. and bv which the treated fabric is subjected Ato pressure.`

The interior proofing substance is squeezed outwardly and the cxteriorly applied conting is squeezed inwardly, theproofing subinem-194 stances formingn homogeneous inseeJ iinpregniiting the fibrous structure und forinin n con therefor. p.

e' tro 36 muy be fed by a pair of reservoirs 3 38, one of which is shown 'at each side of the fibrous Structure. `Frein the rollers 34 35, the treotel structurey muy pass to and l wound on vii suitable drum 80. hissing between o ,pair of rollers 4Q, 41.

T e various rollers may be heated, as by -ton. The proofing 'su tance is sub'ect t0 such curinsteps us may be required y the nature of t o This curing step is such 'as mhy be adapted for the purpose. It is usually np plied after the com ression of the structure.

Having thus ly described my invention, what I claim as new und desire to secure lip Letters Patenis:

1. he process of inciting beltinr which consists in weaving a textile fabric oomprising strands Ywhich res ectii'el)r comprise yarn und oproofing su stance asa core about which mid yarn is spun, und subiecting said fabric to. ressuije for impregnatiii seid textile iiiV lric 'with snid proofing su i nce. i

2. The process of( making belting which consistsin wea prising strands which respectively com rise yum and a proofing substance about w lich said yarn is spun v:is a core, treating said fabric for reducing said proofing substance into permelblestate, und subjecting said fabric to preure, whereby theyiirn of said yarn satid proofing substance permeub strands is impregnated strands. l

3. The process of making belting which. consists in weovin ii-textile fabric comprising strands whc respectively comprise and a proofing substance iibout which om within seid ern is spun as u core, rendering said' proo ng substance permeable, subeoting the siime to pressure, end curing sai proofing substance. i

4. The process of making beltiug which consists in wearing ii textile fabric comprising strands which respectively comprise yum and e proofing substance os c. core about which scid yiirn is spun rendering fe. applying a coating of pei-men. proofing substance to Suid textile fiibricfsuiijecting seid coatedV textile fabric to pressure, and curing said prooing substance.

5. The process of consists in wea prsing strands yarn cndaproofiug su making belong which n textile fabric com;

.proofing substance emploer.

a textile :fabric com ich res ctiieiy comprs"econ`sistsin forming 9130 11S Gor'iplnstic proofing sub about which Said yarn is spun, suid textile fabric `having intersticesv betweenr siiid strands rendering said proofin substance pemesiiie, subjecting slid cui e funi@ in pressure, und applying ii surface coating of proofing substance to said fabric whereby 'said yii'rn is impregnated und said intvrmsices filled with said proofing substance.

6. The process of4 making beltug which consists in weuving n' textile fabric cour prising strands which respectively consist `of u. strin `of proofin Vsubstance surrounded as a core y yarn, ssi textile fabric hui-ing interstices between adjacent strands, reii.

de riiigsnid cores permeable, and subjecting said textile fabric to preure wherebysaid cores are pressed in outward directions .for

iinpre noting siiid yarn from within mid stron und filling said interstces 7. The process of makin belting, which consists in forming u. stront with ii core of plastic' proofing substance surrounded by the twisted yarn which forms the fibrous structure of seid strand, weaving strands so :formed into a fiibric, reducing said cores of proon substance to permeable stufe, and subjecting'snid fabric to pressure while said cores are iii permeable state for im iregnntingl said ya'rn theresiboiit from wit iin siiid strands with proofing substunce of said cores by expression in the individuel sti-:nids

of scid fabric.' i

l8. The process of mii'kiuv belting, which consists in forming n strand with :i core of plastic proofing substance surrounded h v the twisted yarn which forms the fibrous structure of said strand, weaving. strands so formed into a fabric, reducin said cores of proofing substance to pennen le state, sub` )eating sii-id fabric to pressure -while scid cores ure in permeable state for im regneting said yarn tberesiboiit from wit in said strands with proofing substance of said cores by expression in the individuel strands of sfiid fabric, Aund. curing said trited fabric.

9. The process of iniikin belting, which ics consists in. forming a stron with a core of plastic proofing substance surrounded by thc-twisted yarn which forms the' i'ibrous structure of mid strand, weaving strands so formed into n fabric hnving interstices between seid strnnds, reducing seid cores of proofing substance' to permeable strite, sind subjecting: suid fabric topressure while ssi cores are in permeable state for impregnating` seid yarn with proofing substance of sind cores from within said stronde by expression in the individual strands, of scid fabric und injecting proofing substance of. said cores into the interstices between said striinds. i

10. The process oimukingbeltiug, which n. tlriindwth n. com of" stance surrounded by the lso in slid )vai-n which forms the fibrous struciui nl aid strand, weaving a fabric Comprising' a pluralitiv of plies and interlaced hinder," i-oinposed of strands so formed. reden-ni: mi eures of prooling substance to pei'nn-able state. subjecting said fabric to pressure while' said rores are in permeable stab for iniprcgnating said yarn with proofin;y distance of said cores from within said ,denials bj; expression in the individual strands ul' mid fabric and inici-ting proofing' distance of said cures into the intersliw-s bei avi-n said strands. and curing said t-rcati-l fabric.

ll4 The process of n|al\'in 1r belting, which vondst in forming a strand with a coro of plan n' prooling substanre surrounded b v the tu islcd Yarn which formsthe lila-ous structure nl' 4aid strand."wearing a fabric comA pi'isinu' a pluralil'iY of plies and interlaced binder composed of strands so formed, rc

dui-inn said cores of proofing` substance to` permeable state. subjecting said fabric to sti-etching and to pressure while said cores are in permeable state Vfor impregnating said lli-lling' by expression in the individual strands ol' said fabric through said yarn from within said individual strands.

1:?. The process of making: bclting. which consists in formingr plastic proofing sul stance ui uncurcd state into a string, .spinnin"r yarn about said string' for forming a .spun lstrand haring' said string of proofing' substance as a core. weaningr strands so loi-ined and while said cores' are in uncured Vstale into a fabric having interstii'es lwtwecn said strands` providing! said fabric with a sui-fare coating of proofing substancc. and subjecting' said coated fabrir tu llcat and pressure whereby the individual cores of said indnidual strands are pressed outwardly in said individual strands for per inenting the yarns thereof and lilling the interstices between said strands.

13. The process of making bclting, which consists in forming a strand with a core of plastic roofing substance surrounded by the twisted yarn which forms the librous structure of said strand, weaving a fabric comprising a plurality of plies and interlaced binders composed of strands so formed,A reducingr said corcs` of proofing substance to permeable state, subjecting said fabric to stretching and pressure while said cores are in permeable state for impregnating said yarn by expression in the individual strands of said fabric, and curing' said treated fabric.

1J. The process of making beltiug'. which consists in forming a strand with a core of plastic proofing .substance .surrounded by the twisted IYarn which forms the fibrous structure of said strand, weaving a fabric comprisingr a plurality of plies and interlaced binders composed of strands so f n^n1ed,`

reducingI said cores of proofing substance to permeable state, subjecting said fabric to stretching and pressure in the presence of a surface coating of proofing?r substance whereby said iii-stai. med proofing `substance and surface coatingl arl` hon'iogenwusly con ncftcd by expression of said lirstfnained proofing substance in the individual strands of said fabric and b v injection of said sur face coating'.

ln testimony u'l'icreuf. l have hereunto signed ini' naine in the presence of wo Bul)- scribngr witnesses.

nr Nn r L. Iiivrnawa.- Wi turf-:ses:

'liiiinnsA M. quanta, (Turina-:s IC. WEBER.

11. is lim-cby certiiiml thnt. in Let-ners Pnt-ent No. 1,183,194, granted May 16, 11116, upon the application 0f Henry 11. Hathaway, of Ciucinnnti, Ohiuf, fuif an imp rovement. in Methods of Making Wovn' Baking, errors appear in the prinwlllpecifumhion requiring borrccon :is follows; Page 1, lines- 37 'and 47, claims 2 und 3,

aft-er the Word .iubstunw" insvrl the words as (L (011.1; suma pug@ and Claims,

lines 38 and 48, strike nul Llw words as n vofcf; ,md that the s ur Latter? Patent shopld be read with these corrections Lherein that the same may conform to the record 0f the fnse in Lhr: Patent Olivev Signed and'sealcd this 251-11 day of July, A. D., 1016.

[SEMA F. W. H. CLAY,

Acting Comwissoner of Patmis. 

